文献类型：期刊文献

英文题名：Carbon dioxide (CO2) absorption and interfacial mass transfer across vertically confined free liquid film-a numerical investigation

作者：Hu, Jianguang[1];Yang, Xiaogang[2];Yu, Jianguo[1];Dai, Gance[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Nottingham Ningbo China, Int Doctoral Innovat Ctr, Ningbo 315100, Zhejiang, Peoples R China

年份：2017

卷号：111

起止页码：46

外文期刊名：CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

收录：;EI(收录号：20164903078205);WOS:【SCI-EXPANDED(收录号:WOS:000392685600006)】；

基金：JH acknowledges the support of the State Key Laboratory of Chemical Reactors, East China University of Science and Technology, for a Doctoral program scholarship to conduct the study. XY especially thanks the University of Nottingham Ningbo for supporting the joint research collaboration and the financial support of Zhejiang Natural Science Foundation under Grant No. LY15B06001 and Ningbo Bureau of Science and Technology (Grant Nos. 2012B10042, 201401A6106012).

语种：英文

外文关键词：Confined free liquid film; Mass transfer; Vorticity; Computational fluid dynamics (CFD)

摘要：CO2 absorption by a confined free film has been investigated using the CFD approach. Particular attention focuses on the relationship between mass transfer and flow behaviour of the confined free film. Simulation results show that the average K-L value grows 26.9% for the open window region and 17.4% for the lower-wall region, respectively, in comparison to the values in the upper-wall region, and the average IQ value of confined free film along the flow direction is about 19.2% higher than the value of wall-bounded film, which affirms that the use of an open window can significantly enhance mass transfer performance and such effect also has impact on the entire regions. It was revealed that there exist two types of vortices inside the film, inner vortices and interfacial vortices. In addition, a correlation coefficient R-Omega c is proposed to provide a quantitative measure to characterise the relationship between the local mass concentration profile and vorticity distribution of confined free film. Simulation shows that the average value of R-Omega c is 0.93, indicating that the two parameters are highly correlated. Furthermore, the cause of lower correlation coefficient value is discussed. (C) 2016 Elsevier B.V. All rights reserved.